A girl standing some distance from the cliff cl... - WAEC Physics 2015 Question
A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms-1]
A
23m
B
128m
C
288m
D
298m
Ask EduPadi AI...
Correct Option: B
V = (\frac{2nx}{E})
= (\frac{2 \times 1 \times X}{0.8} = 320)
2x = 0.8 x 320
x = (\frac{0.8 \times 320}{2})
= 128m
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